RECORD POSITIONS IN CENTIMETERS FOR EACH CART AND TIME ELAPSED immediately before and immediately after collision. Calculate the velocities of each cart immediately before and immediately after the collision: V = AxI/Atti Vir Axir/Atir 4. Calculate the momentum, the Kinetic Energy K before and after for each cart, and find the % difference. 5. Add 200 gram mass to the red cart and repeat the procedure above. 6. Remove the 200 grams off the red cart. Now hold the carts at the opposite ends of the track. Start the camera and launch the carts towards each other. Keep recording until the carts reach the end of the track. Repeat to get a few runs to select the ones you will use. Record the positions, the velocities, calculate the momentum, KE before and after and compare the total momentum and KE and find the % difference between. 7. Add 200 grams to the red cart and repeat the launch towards each other procedure and calculations. Mass Collision Initial Status time Final Velocity P KE Total P Total KE Position Position Second (cm) (cm) 0 Red: Before 0 Blue: before 58 2.33 60 Red after 60 2.38 63 Blue after 60 2.41 61 %error - - - Observation: 3cm Total Total Mass Collision Status Initial time Position Second Final Velocity P KE P Position Red+.2KG before 0 0 Blue: before 58 6.84 60 Red after 60 5.87 63 Blue after 60 5.92 61 %error Observation: 5 mls KE